Human LEP(Leptin) ELISA Kit
人瘦素(LEP)酶联免疫吸附测定试剂盒
| 规格： | / 96T / 48T / 96T*5 |
| 价格： | / ￥2400 / ￥1650 / ￥10200 |
货号：E-EL-H6017
反应性: 人
检测范围: 15.63~1000 pg/mL
灵敏度: 9.38 pg/mL
用途
该试剂盒用于体外定量检测人serum, plasma and other biological fluids中LEP浓度
检测原理
本试剂盒采用双抗体夹心ELISA法。用抗人LEP抗体包被于酶标板上，实验时样品或标准品中的人LEP会与包被抗体结合，游离的成分被洗去。依次加入生物素化的抗人LEP抗体和辣根过氧化物酶标记的亲和素。抗人LEP抗体与结合在包被抗体上的人LEP结合、生物素与亲和素特异性结合而形成免疫复合物，游离的成分被洗去。加入显色底物(TMB)，TMB在辣根过氧化物酶的催化下呈现蓝色，加终止液后变成黄色。用酶标仪在450nm波长处测OD值，LEP浓度与OD450值之间呈正比，通过绘制标准曲线计算出样品中LEP的浓度。
| 反应类型 | 夹心法 |
| 规格 | 96T |
| 反应时间 | 3.5h |
| 反应性 | 人 |
| 检测方法 | Colormetric |
| 检测范围 | 15.63—1000 pg/mL |
| 灵敏度 | 9.38 pg/mL |
| 样本体积 | 100μL |
| 样本类型 | serum, plasma and other biological fluids |
特异性
可检测样本中的人LEP，且与其它相关蛋白无明显交叉反应。
重复性
板内，板间变异系数均<10%。
典型数据
由于实验操作条件的不同（如操作者、移液技术、洗板技术和稳定条件等），标准曲线的OD值会有所差异。以下数据和曲线仅供参考，实验者需根据自己的实验建立标准曲线。
| (pg/mL) | O.D | Average | Corrected |
|---|---|---|---|
| 1000 | 2.54 2.444 |
2.492 | 2.432 |
| 500 | 1.673 1.613 |
1.643 | 1.583 |
| 250 | 0.908 0.956 |
0.932 | 0.872 |
| 125 | 0.486 0.478 |
0.482 | 0.422 |
| 62.5 | 0.263 0.263 |
0.263 | 0.203 |
| 31.25 | 0.181 0.174 |
0.178 | 0.118 |
| 15.63 | 0.12 0.116 |
0.118 | 0.058 |
| 0 | 0.061 0.059 |
0.06 | -- |
精密度
板内精密度:低浓度样本,中浓度样本和高浓度样本分别在1块板子上检测20次。
板间精密度:低浓度样本,中浓度样本和高浓度样本分别在3块板子上检测20次。
| Intra-assay Precision | Inter-assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean (pg/mL) |
41.50 | 112.90 | 459.52 | 43.08 | 120.81 | 467.85 |
| Standard
deviation |
2.32 | 5.53 | 19.21 | 2.22 | 5.80 | 21.47 |
| C V (%) | 5.59 | 4.90 | 4.18 | 5.15 | 4.80 | 4.59 |
回收率
分别往5个不同样本中添加已知浓度的目标蛋白，做回收实验，得出回收率范围和平均回收率。
| Sample Type | Range (%) | Average Recovery (%) |
|---|---|---|
| Serum (n=5) | 91-103 | 96 |
| EDTA plasma (n=5) | 93-104 | 96 |
| Cell culture media (n=5) | 92-100 | 96 |
线性
分别往5个样本中添加已知浓度的目标蛋白，做回收实验，得出回收率范围及平均回收率。将5个样本分别稀释2倍，4倍，8倍，16倍做回收实验，得出回收率范围及平均回收率。
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 86-95 | 100-109 | 95-104 |
| Average (%) | 91 | 105 | 99 | |
| 1:4 | Range (%) | 85-96 | 86-96 | 91-103 |
| Average (%) | 93 | 91 | 97 | |
| 1:8 | Range (%) | 91-104 | 90-99 | 84-97 |
| Average (%) | 97 | 93 | 91 | |
| 1:16 | Range (%) | 88-96 | 92-103 | 94-102 |
| Average (%) | 92 | 100 | 97 |
试剂盒组成及保存
未拆封的试剂盒可在4℃保存一周；如果一周以后才使用试剂盒，请拆开试剂盒按照下表中的条件分别保存各组分。
| 中文名称 | 英文名称 | 规格 | 保存条件 |
|---|---|---|---|
| ELISA酶标板(可拆卸) | Micro ELISA Plate(Dismountable) | 8 孔×12 条 | -20℃，可存放6个月 |
| 冻干标准品 | Reference Standard | 2 支 | |
| 浓缩生物素化抗体(100×) | Concentrated Biotinylated Detection Ab | 1支 120 μL | |
| 浓缩HRP酶结合物(100×) | Concentrated HRP Conjugate | 1支 120 μL | -20℃(避光)，可存放6个月 |
| 标准品&样品稀释液 | Reference Standard & Sample Diluent | 1瓶 20 mL | 4℃.可存放6个月 |
| 生物素化抗体稀释液 | Biotinylated Detection Ab Diluent | 1瓶 14 mL | |
| 酶结合物稀释液 | HRP Conjugate Diluent | 1瓶 14 mL | |
| 浓缩洗涤液(25×) | Concentrated Wash Buffer (25×) | 1瓶 30 mL | |
| 底物溶液(TMB) | Substrate Reagent | 1瓶 10 mL | 4℃(避光) |
| 反应终止液 | Stop Solution | 1瓶 10 mL | 4℃ |
| 封板覆膜 | Plate Sealer | 5 张 | |
| 产品说明书 | Product Description | 1 份 | |
| 质检报告 | Certificate of Analysis | 1 份 |
说明：所有试剂瓶盖须旋紧以防止蒸发和微生物的污染。
试剂体积以实际发货版说明书为准。相关试剂在分装时会比标签上标明的体积稍多一些，请在使用时量取而非直接倒出。
试验所需自备物品
- 1. 酶标仪(450nm波长滤光片)
- 2. 高精度移液器，EP管及一次性吸头：0.5-10 μL, 2-20 μL, 20-200 μL, 200-1000 μL
- 3. 37℃恒温箱，双蒸水或去离子水
- 4. 吸水纸
操作步骤
|
|
1.对应板孔中加入100μL标准品工作液或样本，37℃孵育90分钟 |
| 2.弃掉板内液体后，立即加入100μL生物素化抗体工作液，37℃孵育60分钟 | |
| 3.弃掉板内液体，洗板3次 | |
| 4.每孔加入100μL HRP酶结合物工作液，37℃孵育30分钟，弃掉板内液体，洗板5次 | |
| 5.每孔加入90μL底物溶液，37℃孵育15分钟 | |
| 6.每孔加入50μL终止液 | |
| 7.立即在450nm波长下读数，处理数据 |
客户发表文献
- 文献: Porous graphene-black phosphorus nanocomposite modified electrode for detection of leptin
- 文献: Adipocytes secreted leptin is a pro-tumor factor for survival of multiple myeloma under chemotherapy
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样品类型: Cell culture supernatant - 文献: Obesity-related proteins score as a potential marker of breast cancer risk
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样品类型: urine - 文献: Adiponectin Receptors and Pro-inflammatory Cytokines Are Modulated in Common Variable Immunodeficiency Patients: Correlation With Ig Replacement Therapy
样品类型: Serum - 文献: Leptin correlates with monocytes activation and severe condition in COVID-19 patients
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样品类型: Serum - 文献: Association of rs699947 (−2578 C/A) and rs2010963 (−634 G/C) Single Nucleotide Polymorphisms of the VEGF Gene, VEGF-A and Leptin Serum Level, and Cardiovascular Risk in Patients with Excess Body Mass: A Case–Control Study
样品类型: Serum - 文献: The protective effect of N-acetyl cysteine against selenium toxicity and gamma irradiation in rats
样品类型: blood - 文献: Effects of TNF inhibitors and an IL12/23 inhibitor on changes in body weight and adipokine levels in psoriasis patients: A 48-week comparative study
样品类型: Serum - 文献: Adiponectin Expression Is Modulated by Long-Term Physical Activity in Adult Patients Affected by Cystic Fibrosis
样品类型: Serum - 文献: Body composition, adipokines, FGF23-Klotho and bone in kidney transplantation: Is there a link?
样品类型: Serum - 文献: Circadian rhythm abnormalities in patients with inflammatory bowel disease – association with adipokine profile
样品类型: Serum - 文献: High Ghrelin Level Predicts the Curve Progression of Adolescent Idiopathic Scoliosis Girls
样品类型: Serum - 文献: Leptin, resistin and visfatin as useful predictors of gestational diabetes mellitus
样品类型: Serum - 文献: Placental peptides metabolism and maternal factors as predictors of risk of gestational diabetes in pregnant women. A case-control study
样品类型: Serum - 文献: Ramadan Intermittent Fasting Is Associated with Changes in Circulating Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9) in Metabolically Healthy Obese Subjects
样品类型: serum - 文献: LEPR gene polymorphism and plasma soluble leptin receptor levels are associated with polycystic ovary syndrome in Han Chinese women
样品类型: Plasma - 文献: Effect of laparoscopic sleeve gastrectomy on renal function in obese patients
样品类型: Serum,Urine - 文献: Correlation of insulin‑resistance with blood fat and glucose in elder patients after surgery for hepatic carcinoma
样品类型: Serum - 文献: New insights into the metabolic-bone crosstalk in active acromegaly
样品类型: serum - 文献: Roles and mechanisms of leptin in osteogenic stimulation in cervical ossification of the posterior longitudinal ligament
样品类型: Serum - 文献: Serum adipocytokines and adiposity as predictive indices of preeclampsia
样品类型: Serum,Urine - 文献: Obesity and Breast Cancer: Association of Serum Adiponectin, Leptin, and Adiponectin–Leptin Ratio as Risk Biomarkers
样品类型: Serum
